Automatic firing device



0. KELLY.

AUTOMATIC FIRING DEVICE.

APPucmon FILED MAY 29. m9.

Patented May 18, 1920.

2 SHEETSSIIEET I- 0. KELLY.

AUTOMATIC FIRING DEViCE.

APPLICATION man an 29. um.

1,340,274 Patented May 18, 1920.

F .4 2 SHEETS-SHEET 2.

GRIN KELLY, OF COLUMBUS, OHIO.

AUTOMATIC FIRING DEVICE.

Specification of Letters Patent.

Patented May 18, 1920.

Application filed Kay 29, 1919. Serial Ho. 800,580.

To all whom it may concern Be it known that I, ORIN KELLY, a cltlzen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a new and useful Automatic Firing Device, of which the following is a specification.

It is the object of th1s invention to provide novel means for feeding fuel to a furnace or other structure of a like sort, novel means being provided whereby the fuel Wlll be dried and semi-coked before being consumed, means being provided where y air may be introduced into the fuel.

Itis within the province of the disclosure to improve generally and to enhance the utility of devices of that type to wh ch the 1nvention appertains. 0

With the above and other objectsln view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings Figure 1 is a vertical sectional detail, showing one form of the invention, parts appearing in elevation; Fig. 2 is an end elevation of the structure shown in Fig. 1; Fig. 3 is a section taken on the line 3--3 of Fig. 1; Fig. elis a section on the line H In carrying out the invention as disclosed in the drawings the numeral 1 denotes a frame of any desired kind, wherein a troughshaped grate 2 is supported by lugs 3 or otherwise. One end of the grate 2 is cut away as shown at 11, to permit the escape of cinders, the other end of the grate being connected to a tubular member 4 extending outwardly through the frame 1. Exteriorly of the frame 1, the tubular member is Supplied with a draft opening 5, controlled by a sliding damper 6 or otherwise, the outer end of the tubular member being closed by a head 7 carrying a bearing 8, wherein a hollow shaft 9 is journaled. The shaft 9 carries a worm conveyer 21 operating in the tubular member 4 and in the grate 2, the shaft 9 being provided, above the grate 2 and between the convolutions of the conveyer 21, with perforations 10. Fuel is supplied to the tubular member 4 from a hopper 12 mounted on the outer end of the tubular member.

Any suitable means me. be provided for rotating the shaft 9 and t e worm conveyer 21. If desired, a ratchet wheel 14 may be secured to the outer end of the shaft 9, the ratchet wheel coacting with a pawl 15 pivoted to an arm 16 mounted to swing on the shaft 9. The arm 16 is operated by a motor, the particular form of which may be, to some extent, a matter of choice. If desired, the arm 16 may be connected by a pin and slot 17 with a plunger 18 mounted to reciprocate in a guide 20, and constituting a part of a water motor 19 which operates slowly.

In practical operation, the fuel, which may be pea or small coal passes from the hopper 12 into the outer end of the tubular member 4, and is advanced slowly by the worm conveyer 21. Air is admitted to any desired extent, into the tubular member 4, through the opening 5, the damper 6 being adjusted as occasion may demand. In the tubular member 4 the coal or other fuel is dried and semi-coked, the air suppl being regulated so that the fuel does not ame in the tubular member. Ultimately, the fuel is advanced out of the tubular member into the troughshaped grate 2, by the action of the worm conveyer 21, and here the fuel bursts into flame. Air is supplied to the fuel, as it burns on the rate, through the hollow shaft 9 by way of t e perforations 10. Not. only is air thus supplied to the burning fuel, but, at the same time, the shaft 9 is cooled. The shaft 9 is journaled somewhat loosely in the bearing 8 and, should the shaft warp, due to the heat, the shaft will not bind and fail to rotate. The ashes, ultimately, are advanced off the inner end of the grate 2, at the cut away portion 11. The motor 19 imparts reciprocation to the plunger 18, the arm 16 and the pawl 15 rotating the shaft 9 slowly,.through the instrumentality of the ratchet wheel 14.

Having thus described the invention, what is claimed is 1. In a device of the class described, a tubular member; a trou h-shaped rate at the inner end of the tu ular mem er and open for the admission of air; a hollow shaft in the tubular member and in the grate, the shaft being open at its outer end and having perforations located above the grate; a worm carried by the shaft and operating in the tubular member and in the grate; and means for supplying fuel to the tubular member adjacent to the outer end of the tubular member.

2. A device of the class described, constructed as set forth in claim 1, and further characterized by the fact that the tubular member is provided, adjacent to its top, with an opening communicating with the atmosphere, the opening being located inwardly of the fuel supplying means; and a damper controlling the 0 emng.

In testimony t at I claim the foregoing 15 as m own, I have hereto afiixed my s1gnature in the presence of two witnesses.

ORIN KELLY.

Witnesses:

J. L. BAOHMAN, INEZ Momus. 

